The Common Alfalfa is a somewhat winter hardy perennial legume, but it grows more quickly than other regular alfalfa varieties. As an annual green manure, this cool-season "Summer" alfalfa can produce up to 10 tons of organic matter per acre. Its long taproots break up compacted soil and bring up subsurface minerals. High nitrogen fixation and great bee forage. Alfalfa is basically good at everything, as it great for nitrogen fixation and bee forage! Just look at all it's uses below! Alfalfa (Medicago sativa L.): Cool season, broadleaf, Perennial, Legume (N-fixation), Upright plant growth, Crude protein: hay or silage 14-22% Uses: Bees & Beneficial Insects, Chicken Forage, Compaction Control, Deer Attractant, Erosion Control, Forage, Green Manure, Nitrogen Fixation, Nitrogen Scavenger, No Till, Organic Matter (Biomass), Weed Suppression